Motherboard for Yamaha Clavinova CLP-150

I trying to track down a main circuit board(motherboard) for a Yamaha Clavinova CLP-150.
This model is 15 years old and Yamaha does not have this part. Nor are they buidling new ones.
The part number is V8540500.
If anyone out there…

We don’t have one here, and I did confirm also that the board is no longer available from Yamaha.